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Finding the Fourth Proportional to 741.90, 1,112.10 and 497.86

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Solution

The fourth proportional to 741.90, 1,112.10 and 497.86 is: 746.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.90 : 1,112.10 = 497.86 : x
  2. Step 2: Convert to fraction form
    741.90/1,112.10 = 497.86/x
  3. Step 3: Cross multiply
    741.90x = 1,112.10 × 497.86
  4. Step 4: Simplify right side
    741.90x = 553,670.11
  5. Step 5: Solve for x
    x = 553,670.11/741.90
  6. Step 6: Final answer
    x = 746.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.